Analog Microelectronics offers analog ICs with voltage output for capacitance measurements. The capacitance-to-voltage converter product family comprises ICs for differential capacitance measure-ments and single capacitance measurements. The C/V-converters feature an adjustable ratiometric voltage output (e.g. 1 … 4 V), an integrated temperature sensor and a voltage reference. They can be used in a voltage range from 4.75 to 5.25 V (typically 5 V) and a temperature range from -40 to 105 °C.

CAV424 C/V-Converter for Single and Differential Measurement

CAV424 is an integrated capacitance-to-voltage converter suitable for the measurement of single or differential input capacitances. It generates a ratiometric output voltage signal and can be used as front end for µC. The IC’s wide measurement range, low EM susceptibility and high sensitivity allow a multitude of applications.

CAV444 C/V-Converter IC with Linear Voltage Output

CAV444 is a capacitance-to-voltage converter IC for the measurement of single capacitances. Its ratiometric output voltage signal is proportional to the input capacitance. CAV444 can be used as stand-alone IC or as front end for µC. Its wide capacitance measurement range and high sensitivity allow various applications.